Mario Cohn‐Haft

ORCID: 0000-0002-5241-2344
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About
Contact & Profiles
Research Areas
  • Ecology and Vegetation Dynamics Studies
  • Species Distribution and Climate Change
  • Wildlife Ecology and Conservation
  • Fish biology, ecology, and behavior
  • Avian ecology and behavior
  • Plant and animal studies
  • Amphibian and Reptile Biology
  • Wildlife-Road Interactions and Conservation
  • Animal Vocal Communication and Behavior
  • Evolution and Paleontology Studies
  • Environmental and biological studies
  • Scarabaeidae Beetle Taxonomy and Biogeography
  • Conservation, Biodiversity, and Resource Management
  • Animal and Plant Science Education
  • Genetic diversity and population structure
  • Plant Diversity and Evolution
  • Mollusks and Parasites Studies
  • Marine animal studies overview
  • Primate Behavior and Ecology
  • Aquatic Ecosystems and Biodiversity
  • Plant Toxicity and Pharmacological Properties
  • Phytochemistry and Bioactivity Studies
  • Genetic and phenotypic traits in livestock
  • Bird parasitology and diseases
  • Migration, Education, Indigenous Social Dynamics

National Institute of Amazonian Research
2013-2024

Fundação de Medicina Tropical
2023

Brazilian Institute of Environment and Renewable Natural Resources
2000

Cornell University
2000

Cornell Lab of Ornithology
2000

Universidade Federal de Pernambuco
2000

Smithsonian Institution
2000

Louisiana State University Agricultural Center
2000

Museu Paraense Emílio Goeldi
2000

Since 2005, the Brazilian Ornithological Records Committee (CBRO) has published updated checklists of birds almost every year. Herein, we present a completely new and annotated version our checklist. For first time, list all bird subspecies known from Brazil that are currently accepted by at least one key ornithological reference work. The inclusion should be seen as synthesis, not taxonomic endorsement. As such, include in checklist 1919 avian species, 910 which treated polytypic works...

10.1007/bf03544294 article EN Revista Brasileira de Ornitologia 2015-06-01

Abstract Vegetation on sandy soils, ranging from open grasslands and shrublands to closed‐canopy, thin‐trunked forests, can be found in patches throughout the Amazon. Despite variation names, appearance, ecological correlates, suggested origins, these ‘white‐sand ecosystems’ ( WSE ) share distinctive characteristics biological communities. Here, first Amazon‐wide review of , we factors underlying this variation. We present most comprehensive map date calculate their total area. find that are...

10.1111/btp.12293 article EN Biotropica 2016-01-01

Open vegetation (campinas and campinaranas) associated with white sand patches occurs in the form of islands a forested matrix throughout Amazon basin. Bird species restricted to these habitats have patchy distributions, although connectivity may been influenced by past glacial cycles as result substitution forest savanna. Because landscape changes are matter debate history Amazonia, we studied diversification Xenopipo atronitens, specialist, aiming infer effects climate changes. The split...

10.1111/bij.12102 article EN Biological Journal of the Linnean Society 2013-05-21

Abstract Approximately 20% of the Brazilian Amazon has now been deforested, and is currently experiencing highest rates deforestation in a decade, leading to large‐scale land‐use changes. Roads have consistently implicated as drivers ongoing may act corridors facilitate species invasions. Long‐term data, however, are necessary determine how ecological succession alters avian communities following whether established roads lead constant influx new species. We used data across nearly 40 years...

10.1002/ece3.5822 article EN cc-by Ecology and Evolution 2019-11-27

Abstract Despite the importance of rivers in Amazonian biogeography, avian distribution patterns river‐created habitats ( i.e ., floodplain forests) have been sparsely addressed. Here, we explore geographic variation forest avifaunas, specifically regarding one most striking aspects Amazon: diversity river “colors” types, based on color water). We sampled avifauna at 30 sites, located 17 different (nine black‐ and eight whitewater), Rio Negro basin, northwestern Brazil. Our sampling...

10.1111/btp.12650 article EN Biotropica 2019-05-01

Abstract White‐sand vegetation ( WSV ) harbors a unique avifauna within Amazonia, including species with patchy distributions. The history of these species' populations is likely related to variation in the availability and connectivity among patches though time. By investigating phylogeographic bird species, we aim better understand dynamic evolution forested open habitats Amazonia. Here, perform analysis two specialist tanager, T achyphonus phoenicius , hummingbird, P olytmus theresiae ....

10.1111/btp.12292 article EN Biotropica 2016-01-01

Abstract Aim Although ‘river color’ or water type is an important determinant of Amazonian floodplain biodiversity, the relevance mixing distinct types at river confluences to distribution terrestrial fauna has been largely overlooked. We investigated how influx a sediment‐rich whitewater tributary affects forest avifauna along world's largest blackwater river. Location Northwestern Brazilian Amazon. Taxon Birds. Methods sampled and retrieved estimates sediment concentration in (the main...

10.1111/jbi.14042 article EN Journal of Biogeography 2021-01-22

Journal Article The Status of North American Migrants in Central Amazonian Brazil Get access Douglas F. Stotz, Stotz Biological Dynamics Forest Fragments, INPA-Ecologia, C.P. 478, Manaus, AM CEP 69011, Brazil, Division Birds, Field Museum Natural History, Chicago, IL 60605, and Committee on Evolutionary Biology, University 60637 Search for other works by this author on: Oxford Academic Google Scholar R. O. Bierregaard, Bierregaard Mario Cohn-Haft, Cohn-Haft Peter Petermann, Petermann Max...

10.2307/1369246 article EN Ornithological Applications 1992-08-01

Abstract: Researchers predict that new infrastructure development will sharply increase the rate and extent of deforestation in Brazilian Amazon. There are no predictions, however, which species it affect. We used a spatially explicit model predicts location Amazon by 2020 on basis historical patterns following development. overlaid predicted deforested areas onto maps bird ranges to estimate amount habitat loss within ranges. also estimated modified ecoregions, were as surrogates for...

10.1111/j.1523-1739.2008.00939.x article EN Conservation Biology 2008-06-10

Abstract High rates of old growth (OG) forest destruction and difficult farming conditions result in increasing cover secondary forests (SF) the Amazon. In this setting, it is opportune to ask which animals use newly available SF stay restricted OG. This study presents a comparison OG site occupancy by nocturnal birds terra firme Amazon Guianan shield, north Manaus, Brazil. We tested species‐specific predictions for two owls ( Lophostrix cristata/Glaucidium hardyi ), potoos Nyctibius...

10.1111/j.1469-1795.2009.00312.x article EN Animal Conservation 2009-10-27

Morphological, vocal and genetic studies have shown that the Madeira River its right bank tributaries delimit populations of primates birds. We sequenced cytochrome b gene (approx. 950 bp) for individuals three suboscine passerine bird species, Glyphorynchus spirurus (Furnariidae), Willisornis poecilinotus (Thamnophilidae) Schiffornis turdina (Tityridae), on opposite banks two right-bank tributaries, Aripuanã Jiparaná rivers. Phylogenetic hypotheses (parsimony, maximum likelihood Bayesian...

10.1007/bf03544273 article EN Revista Brasileira de Ornitologia 2014-12-01

Site-based avian inventories are ubiquitous in Neotropical ornithology but prone to error if feldworkers not familiar with the regional species pool, particularly species-rich regions such as Amazon basin. Here, we review recent lists from Brazilian both primary ornithological literature and protected area management plans assess level of putative errors terms bird recorded site-based that biogeographically unlikely sampled region. We found be frequent across all inventory types. Failure...

10.1007/bf03544240 article EN Revista Brasileira de Ornitologia 2014-06-01

While many published maps of avian species richness indicate northern Amazonia to be somewhat species-poor, recent surveys reveal that this area actually possesses one the most species-rich avifaunas in Neotropical lowlands. Our at least 520 bird occur Viruá National Park (VNP) and adjacent areas, which is located Brazilian state Roraima (northern Amazonia). Here, we present results our ornithological efforts since 2001, based on audio-visual mist-netting surveys, vouchered by tape digital...

10.1007/bf03544242 article EN Revista Brasileira de Ornitologia 2014-06-01

Although species lists from throughout Amazonia have become available, relatively complete inventories based on longterm work remain rare. Longitudinal comparisons at well-studied sites provide the best opportunities for describing communities and identifying changes in regional avifaunas. Within central Amazonia, no region has received as much consistent ornithological coverage terra firme forests north of Manaus, Brazil, Biological Dynamics Forest Fragments Project (BDFFP). Here we an...

10.1007/bf03544408 article EN Revista Brasileira de Ornitologia 2017-12-01

Abstract Aim To offer a test of expert knowledge about rarity twenty Amazon forest bird species following an approach that equates with low site occupancy and formally accounts for imperfect detection. We define ten pairs closely related species, each pair one hypothetically common rare species. Our null hypothesis is members have similar occupancy, hypothesized differences due to detection errors alone. Location A 1000‐ha plot primary rainforest in the central Brazilian Amazon. Methods...

10.1111/ddi.12033 article EN other-oa Diversity and Distributions 2013-01-17

Summary The Rio Branco is a river with unique biogeographic and ecological features, threatened by the Brazilian Government’s plan to build major hydroelectric dam associated hydroway along its course. crosses one of Amazonia’s largest rainfall gradients geomorphological boundary savanna/forest ecotone, marked Bem Querer rapids. Above rapids, upper runs through Boa Vista sedimentary formation crystalline rocks Guiana Shield, margins are flanked gallery forests. Downriver, it low-lying basin,...

10.1017/s0959270919000133 article EN Bird Conservation International 2019-06-24

An undescribed population of antbirds in the Cercomacra tyranninalni- grescens complex that is sympatric with tyrannina was discovered north Manaus, Brazil. The new differs from plumage, certain mensural characters, and especially voice. Based on similarity song, form Manaus considered conspecific laeta. However, because sympatry tyrannina, laeta must be elevated to full species level, three subspecies: extreme southeastern Amazonia; C. sabinoi northeastern Brazil; a subspecies described...

10.2307/40157530 article EN Ornithological Monographs 1997-01-01
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